A friend of mine had two Staffordshire Bull Terriers that she had to keep separated all the time. They got into fights, twice! One time, going over to her place, Staffie bitch had a large gash on the back of her neck from where the male bit her. The nale had no wounds at all. The bitch has hormonal problems too, and can be snappy with other dogs. She almost attacked one of my other friend's Staffies at a show just before my sis was taking the dog in for Juniors.